100 



rugose, as in the other species. Elytra short and broad ; costal border con- 

 siderably swollen near the base ; the internal border full. 



Color. — Dark reddish-brown ; marked on the head and pronotum as in 

 S. lineata, but with the colors much supjiressed. Elytra uniform pale- 

 brownish, transparent. Wings transparent, colorless, with the nervures of 

 the anterior half black. 



Dimensions. — 2 Length, 1.2 inches; elytra, 0.83 inch; hind femora, 

 0.G8 inch. 



New England (Scudder). 



TKA«®CEFHA£.A, Marr. 



Body compressed on the sides, narrow. Head narrow, acuminate in 

 front ; the part in front of the eyes about equal to the portion behind them. 

 Vertex elongate-triangular ; the front angle generally acute, especially in the 

 males ; slightly deflexed ; the margins more or less raised ; lateral foveolse, 

 when present, triangular, but when obsolete they are represented by flat, tri- 

 angular spaces. Eyes sub-globose, rather prominent. Antennae short, sel- 

 dom reaching the tip of the pronotum in the female, thick, somewhat flat- 

 tened, and slightly enlarged toward the tip ; joints very short. Frontal costa 

 very prominent above, generally sulcate ; face sub-oblique and somewhat 

 curved under toward the breast. Pronotum compressed, slightly constricted 

 near the anterior border ; narrowed in front and expanding posteriorly ; 

 slightly angled in front, posterior extremity generally acute-angled ; median 

 carina somewhat prominent, straight, or very slightly arcuate, usually entire; 

 lateral carinas sometimes obsolete or indistinct, especially in the females, 

 often distinct throughout in the males ; sides of the disk sloping upward to 

 the median carinae. Elytra and wings rather narrow, passing the abdomen. 

 Middle legs longer than the anterior pair ; posterior femora moderately in- 

 flated, generally longer than the abdomen. Presternum unarmed. Species 

 of medium size. 



T. obioita. 



Syn., Stoiobothrus obionus, Tiios., Geol. Surv. Terr., 1870, 279. 



Vertex narrow, somewhat deflexed ; margins raised, acute, sub-parallel, 

 acutely rounded at the apex. Face sub-vertical, the lower part curved under 

 toward t he breast ; frontal costa prominent, expanding slightly below, flat or 



